To put my original post into perspective - my "criticism" was not designed to discourage ANYONE from "TINKERING " with their 1911 BUT to recognize the CRITICAL mechanisms of the gun that should be addressed only by those VERY FAMILIAR with their proper and safe operation - the trigger/hammer/sear/disconnector/thumb and grip safeties being the most critical!
Re: the grip safety: as an IPSC Range Officer - several times I saw an AD caused by an improperly fitted grip safety that did come off safe until the grip was depressed to its MAXIMUM. In each case the shooter thought there was some kind of malfunction, changed their grip slightly with the finger still on the trigger and the gun discharged " accidently". Although the gun was still safely pointed downrange it was an AD and the shooter(s) were DQ'd. Proper installation requires only SLIGHT depression of the grip safety and a "stout" spring tension to hold it in the "safe" position.
Re: the "helpful video". Yes the " gentleman" was successful in making it "fit" but I take umbridge with someone posting such videos and making the statement at 4:10 "allows the trigger to come back to engage the sear" ..... !!!!! NO! The trigger NEVER engages the SEAR! The trigger bow presses on the disconnector and the DISCONNECTOR presses on the sear!!!
If anyone wants to "tinker" with their 1911 -start off properly : get BOOKS on the subject and READ READ READ! Books are carefully written, proof read for content, spelling and credibility and the author's "credentials" clearly stated. UTube vids DON'T CUT IT!!!!!
My recommendation is the Jerry Kuhnhausen book "The Colt .45 Automatic - A Shop Manual". If it doesn't tell you what and how to do it - then you don't need to know it! AND YES I know it costs $35 + but anyone baulking at the price compared to the knowlege contained therein really doesn't deserve much sympathy! GET THE BOOK!!! READ READ READ. Recently I was confounded by a problem with a 1911 and after thrashing around for TOO LONG finally solved the problem. A week later -on a "smoke break" -pulled out "The Jerry book" and started browsing from back to front and THERE amongst his "miscellaneous" comments was the FIX the problem I'd thrashed with for days!!! PROOF old dogs CAN STILL be taught new tricks!!
To conclude: these comments are NOT DESIGNED to discourage anyone but rather to ENCOURAGE and IMPLORE them to get started properly by READING READING READING and studying studying and learning from RELIABLE KNOWLEDGABLE resources!!!